ATLAS-3472 :- Fix to port jsp's to Servlet.

webapp/src/main/java/org/apache/atlas/web/servlets/AtlasErrorServlet.java

+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * <p>
+ * http://www.apache.org/licenses/LICENSE-2.0
+ * <p>
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.atlas.web.servlets;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+public class AtlasErrorServlet  extends AtlasHttpServlet {
+    public static final Logger LOG = LoggerFactory.getLogger(AtlasErrorServlet.class);
+
+    public static final String ERROR_HTML_TEMPLATE = "/error.html.template";
+
+    @Override
+    protected void service(HttpServletRequest request, HttpServletResponse response) {
+        includeResponse( request,  response, ERROR_HTML_TEMPLATE);
+    }
+}

webapp/src/main/java/org/apache/atlas/web/servlets/AtlasHttpServlet.java

+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * <p>
+ * http://www.apache.org/licenses/LICENSE-2.0
+ * <p>
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.atlas.web.servlets;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import javax.servlet.RequestDispatcher;
+import javax.servlet.ServletContext;
+import javax.servlet.http.HttpServlet;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+public class AtlasHttpServlet extends HttpServlet {
+    public static final Logger LOG = LoggerFactory.getLogger(AtlasHttpServlet.class);
+
+    public static final String TEXT_HTML     = "text/html";
+    public static final String XFRAME_OPTION = "X-Frame-Options";
+    public static final String DENY          = "DENY";
+
+    protected void includeResponse(HttpServletRequest request, HttpServletResponse response, String template) {
+        try {
+            response.setContentType(TEXT_HTML);
+            response.setHeader(XFRAME_OPTION, DENY);
+            ServletContext context = getServletContext();
+            RequestDispatcher rd = context.getRequestDispatcher(template);
+            rd.include(request, response);
+        } catch (Exception e) {
+            LOG.error("Error in AtlasHttpServlet", template, e);
+        }
+    }
+}
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webapp/src/main/java/org/apache/atlas/web/servlets/AtlasLoginServlet.java

+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * <p>
+ * http://www.apache.org/licenses/LICENSE-2.0
+ * <p>
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.atlas.web.servlets;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+public class AtlasLoginServlet extends AtlasHttpServlet {
+    public static final Logger LOG = LoggerFactory.getLogger(AtlasLoginServlet.class);
+
+    public static final String LOGIN_HTML_TEMPLATE = "/login.html.template";
+
+    @Override
+    protected void service(HttpServletRequest request, HttpServletResponse response) {
+        includeResponse(request, response, LOGIN_HTML_TEMPLATE);
+    }
+}
\ No newline at end of file

webapp/src/main/resources/spring-security.xml

@@ -20,6 +20,7 @@
     <!-- This XML is no longer being used, @see AtlasSecurityConfig for the equivalent java config -->
 
     <security:http pattern="/login.jsp" security="none" />
+    <security:http pattern="/error.jsp" security="none" />
     <security:http pattern="/css/**" security="none" />
     <security:http pattern="/img/**" security="none" />
     <security:http pattern="/libs/**" security="none" />

webapp/src/main/webapp/WEB-INF/web.xml

@@ -36,6 +36,26 @@
         <load-on-startup>1</load-on-startup>
     </servlet>
 
+    <servlet>
+         <servlet-name>LoginServlet</servlet-name>
+         <servlet-class>org.apache.atlas.web.servlets.AtlasLoginServlet</servlet-class>
+    </servlet>
+
+    <servlet-mapping>
+         <servlet-name>LoginServlet</servlet-name>
+         <url-pattern>/login.jsp</url-pattern>
+    </servlet-mapping>
+
+    <servlet>
+         <servlet-name>ErrorServlet</servlet-name>
+         <servlet-class>org.apache.atlas.web.servlets.AtlasErrorServlet</servlet-class>
+    </servlet>
+
+    <servlet-mapping>
+         <servlet-name>ErrorServlet</servlet-name>
+         <url-pattern>/error.jsp</url-pattern>
+    </servlet-mapping>
+
     <servlet-mapping>
         <servlet-name>jersey-servlet</servlet-name>
         <url-pattern>/api/atlas/*</url-pattern>

webapp/src/main/webapp/login.jsp → webapp/src/main/webapp/login.html.template

@@ -15,12 +15,11 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
 -->
-<% response.setHeader("X-Frame-Options", "DENY"); %>
 <!--[if lt IE 7]>      <html class="no-js lt-ie9 lt-ie8 lt-ie7"> <![endif]-->
 <!--[if IE 7]>         <html class="no-js lt-ie9 lt-ie8"> <![endif]-->
 <!--[if IE 8]>         <html class="no-js lt-ie9"> <![endif]-->
 <!--[if lt IE 9]>
-    <script type="text/javascript">
+<script type="text/javascript">
         function Redirect() {
             window.location.assign("ieerror.html");
         }
@@ -28,8 +27,8 @@
     </script>
 <![endif]-->
 <!--[if gt IE 7]>
-    <script src="js/external_lib/es5-shim.min.js"></script>
-    <script src="js/external_lib/respond.min.js"></script>
+<script src="js/external_lib/es5-shim.min.js"></script>
+<script src="js/external_lib/respond.min.js"></script>
 <![endif]-->
 <!--[if gt IE 8]><!-->
 <html class="no-js">
@@ -50,7 +49,7 @@
 </head>
 
 <body class="login-body">
-    <div class="login-form">
+<div class="login-form">
     <div class="logo-container text-center">
         <img src="img/atlas_logo.svg" />
     </div>
@@ -66,7 +65,7 @@
         <span id="errorBox" class="col-md-12 help-inline" style="color:#FF1A40;display:none;text-align:center;padding-bottom: 10px;"><span class="errorMsg"></span></span>
         <button class="btn btn-default btn-block btn-login" id="signIn">Log in</button>
     </form>
-    </div>
+</div>
 </body>
 
 </html>
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